Specs & Information
Resin | Hardeners | Epoxy
Green Room Epoxy System
Designed specifically for surfboard and SUP manufacturing, the Green Room Epoxy System is engineered for strength, clarity, and durability. This 2-part, 100% solids, no-VOC epoxy resin/hardener combo delivers pro-level performance with a convenient 2:1 mix ratio by volume (100:44 parts by weight). It’s formulated for wet hand lay-up laminations and offers low viscosity for rapid wet out, excellent air release, and a smooth, self-leveling finish with high gloss.
What makes it stand out? No blushing, no shrinkage, and no hassle. Even in low temperatures and high humidity, it cures flawlessly—no yellowing, no chalking, just bright, crystal-clear laminations. With a lower peak exotherm temperature than most fast-setting epoxies, it’s also ideal for fin box installations because it prevents foam core melting. Plus, with three resin and five hardener options, you can fine-tune your mix for the perfect balance of flexibility, strength, and workability.
rESIN oPTIONS
Not all resins are created equal. Our high-performance epoxy resins are designed to give shapers full control over clarity, workability, and durability, so you can dial in the perfect formula for every board.
Hardener Options
Timing is everything. With multiple hardener options to choose from, you can adjust cure speed and workability to match your process.
Tips for Mixing Epoxy
For the best results, always measure epoxy by weight, not volume. It’s more precise, more efficient, and actually saves you time and money compared to using graduated mixing cups. All Green Room Epoxy Resins mix at 100 parts resin to 44 parts hardener by weight, so grab a digital scale that measures in grams to one decimal place, and you’re good to go.
Want a foolproof method? Dr. Rob’s got you covered. We like to keep a big-button calculator taped to the wall right next to the scale—because the fewer math mistakes, the better.
Mixing Instructions
- Make sure your scale capacity can handle the total weight of the mix plus the bucket.
- Place your container on the scale and hit tare—the reading will go to 0.0.
- Pour in your hardener first. (Let’s use the example of pouring 101.2 gm) Pouring the hardener first helps it mix better into the corners of the bucket.
- Calculate the amount of resin needed: Take the grams of hardener and divide by 0.44. For example: 101.2 ÷ 0.44 = 230.0 gm resin.
- Without removing the container, re-tare the scale. The reading will again go to 0.0.
- Pour in the correct amount of resin. The resin weight must be within ±2% of the target weight to ensure proper curing.
- Add dye or pigment if desired—no more than 5% by weight of the total mix.
- Remove from the scale. Then, mix gently but thoroughly for 2 to 4 minutes, scraping the sides and bottom with a mixing stick. Avoid whipping in excess bubbles.
Ready for use!
Locations Worldwide
With locations across the U.S. and beyond, Green Room Board Co. is bringing exclusive surfboard-building materials to shapers around the world.
Click on the city for address and contact info.
